The Tor Browser: toolkit/crashreporter/InjectCrashReporter.cpp@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #include "InjectCrashReporter.h"

     7 #include "nsDirectoryServiceUtils.h"

     8 #include "nsDirectoryServiceDefs.h"

     9 #include "client/windows/crash_generation/crash_generation_client.h"

    10 #include "nsExceptionHandler.h"

    11 #include "LoadLibraryRemote.h"

    12 #include "nsWindowsHelpers.h"

    14 using google_breakpad::CrashGenerationClient;

    15 using CrashReporter::GetChildNotificationPipe;

    17 namespace mozilla {

    19 InjectCrashRunnable::InjectCrashRunnable(DWORD pid)

    20   : mPID(pid)

    21 {

    22   nsCOMPtr<nsIFile> dll;

    23   nsresult rv = NS_GetSpecialDirectory(NS_GRE_DIR, getter_AddRefs(dll));

    24   if (NS_SUCCEEDED(rv)) {

    25     dll->Append(NS_LITERAL_STRING("breakpadinjector.dll"));

    26     dll->GetPath(mInjectorPath);

    27   }

    28 }

    30 NS_IMETHODIMP

    31 InjectCrashRunnable::Run()

    32 {

    33   if (mInjectorPath.IsEmpty())

    34     return NS_OK;

    36   nsAutoHandle hProcess(

    37     OpenProcess(PROCESS_CREATE_THREAD |

    38                 PROCESS_QUERY_INFORMATION |

    39                 PROCESS_DUP_HANDLE |

    40                 PROCESS_VM_OPERATION |

    41                 PROCESS_VM_WRITE |

    42                 PROCESS_VM_READ, FALSE, mPID));

    43   if (!hProcess) {

    44     NS_WARNING("Unable to open remote process handle for crashreporter injection.");

    45     return NS_OK;

    46   }

    48   void* proc = LoadRemoteLibraryAndGetAddress(hProcess, mInjectorPath.get(),

    49                                               "Start");

    50   if (!proc) {

    51     NS_WARNING("Unable to inject crashreporter DLL.");

    52     return NS_OK;

    53   }

    55   HANDLE hRemotePipe =

    56     CrashGenerationClient::DuplicatePipeToClientProcess(

    57       NS_ConvertASCIItoUTF16(GetChildNotificationPipe()).get(),

    58       hProcess);

    59   if (INVALID_HANDLE_VALUE == hRemotePipe) {

    60     NS_WARNING("Unable to duplicate crash reporter pipe to process.");

    61     return NS_OK;

    62   }

    64   nsAutoHandle hThread(CreateRemoteThread(hProcess, nullptr, 0,

    65                                           (LPTHREAD_START_ROUTINE) proc,

    66                                           (void*) hRemotePipe, 0, nullptr));

    67   if (!hThread) {

    68     NS_WARNING("Unable to CreateRemoteThread");

    70     // We have to close the remote pipe or else our crash generation client

    71     // will be stuck unable to accept other remote requests.

    72     HANDLE toClose = INVALID_HANDLE_VALUE;

    73     if (DuplicateHandle(hProcess, hRemotePipe, ::GetCurrentProcess(),

    74                         &toClose, 0, FALSE,

    75                         DUPLICATE_CLOSE_SOURCE | DUPLICATE_SAME_ACCESS)) {

    76       CloseHandle(toClose);

    77       return NS_OK;

    78     }

    79   }

    81   return NS_OK;

    82 }

    84 } // namespace mozilla

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